Glasgow Coma Scale
My Recorded GCS Values (all 2015)
The values shown above are all taken from a neuro-psychiatrist's report by simply searching for the term "GCS", follow this link to open the report as a PDF.
GCS is the most common scoring system used to describe the level of consciousness in a person following a traumatic brain injury. It is used to help gauge the severity of an acute brain injury. The test is simple, reliable, and correlates well with outcome following severe brain injury. Generally brain injury is classified as:
Follow this link to view an authorititive source on the subject matter.
Scoring System (taken from Wikipedia page)
After my mother suffered heart attack symptoms in 2018, I accompanied her on the ambulance journey to hospital. I enquired of GCS 3 during conversation with the paramedics, they said something long the lines of "It basically means you are dead."